Electrolytic Cells
Chemistry ⇒ Redox Reactions and Electrochemistry
Electrolytic Cells starts at 11 and continues till grade 12.
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A solution of NiSO4 is electrolyzed using nickel electrodes. Write the half-reactions occurring at the anode and cathode.
Describe the process of electrorefining of copper using an electrolytic cell.
Describe the role of the external power source in an electrolytic cell.
Describe what happens at the anode and cathode during the electrolysis of water.
During the electrolysis of aqueous CuSO4 using copper electrodes, what happens to the mass of the anode and cathode?
Explain the term 'overpotential' in the context of electrolytic cells.
Explain why electrolysis of molten NaCl produces sodium metal and chlorine gas, but electrolysis of aqueous NaCl produces hydrogen gas and chlorine gas.
Explain why inert electrodes such as platinum or graphite are often used in electrolytic cells.
In an electrolytic cell, which electrode is connected to the positive terminal of the external power supply? (1) Anode (2) Cathode (3) Both (4) Neither
In the electrolysis of aqueous NaCl, which gas is produced at the anode? (1) Hydrogen (2) Oxygen (3) Chlorine (4) Nitrogen
In the electrolysis of molten NaCl, what is produced at the cathode? (1) Na (2) Cl2 (3) H2 (4) O2
Which law states that the mass of a substance altered at an electrode during electrolysis is proportional to the amount of electricity used? (1) Boyle's Law (2) Faraday's First Law (3) Charles's Law (4) Avogadro's Law
Fill in the blank: In an electrolytic cell, oxidation occurs at the _______.
Fill in the blank: The amount of substance deposited or liberated at an electrode during electrolysis is directly proportional to the _______ passed through the electrolyte.
Fill in the blank: The electrode at which reduction occurs in an electrolytic cell is called the _______.
Fill in the blank: The electrode where electrons are supplied by the external source in an electrolytic cell is the _______.
True or False: Electrolysis can be used to separate elements from their naturally occurring sources, such as ores.
True or False: In an electrolytic cell, the anode is positive and the cathode is negative.
True or False: In an electrolytic cell, the direction of electron flow is from the anode to the cathode through the external circuit.
True or False: The amount of gas produced at an electrode during electrolysis is independent of the current passed.
